3457-46-3 4,4'-Dichlorobenzil 4,4'-Dichlorodibenzoyl AI3-15871 BIS(4-CHLOROPHENYL)ETHANEDIONE Benzil, 4,4'-dichloro- Bis(p-chlorophenyl)ethanedione EINECS 222-387-7 Ethanedione, bis(4-chlorophenyl)- NSC 274